T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A254491

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =512a(1) =3264a(2) =3264a(3) =19456a(4) =29952a(5) =19456a(6) =114880a(7) =278848a(8) =281024a(9) =114880a(10) =660480a(11) =2523008a(12) =3912576a(13) =2520832a(14) =660480a(15) =3727552a(16) =21822912a(17) =51322752a(18) =50028672a(19) =21641920a(20) =3727552a(21) =20872192a(22) =186999040a(23) =656964096a(24) =1018596736a(25) =640020096

External references